netdev - Re: [PATCH net] packet: call fanout_release, while UNREGISTERING a netdev

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Date:   Thu, 06 Oct 2016 20:50:52 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     anoob.soman@...rix.com
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net] packet: call fanout_release, while UNREGISTERING a
 netdev

From: Anoob Soman <anoob.soman@...rix.com>
Date: Wed, 5 Oct 2016 15:12:54 +0100

> If a socket has FANOUT sockopt set, a new proto_hook is registered
> as part of fanout_add(). When processing a NETDEV_UNREGISTER event in
> af_packet, __fanout_unlink is called for all sockets, but prot_hook which was
> registered as part of fanout_add is not removed. Call fanout_release, on a
> NETDEV_UNREGISTER, which removes prot_hook and removes fanout from the
> fanout_list.
> 
> This fixes BUG_ON(!list_empty(&dev->ptype_specific)) in netdev_run_todo()
> 
> Signed-off-by: Anoob Soman <anoob.soman@...rix.com>

Applied and queued up for -stable, thanks.